'''Nicomachus,''' or '''Nicomachus of Gerasa,'''
(; c. 60 – c. 120 CE) was an important ancient mathematician
best known for his works ''Introduction to Arithmetic
'' and ''Manual of Harmonics
'' in Ancient Greek|Greek
. He was born in Gerasa
, in the Syria (Roman province)|Roman province of Syria
), and was strongly influenced by Aristotle. He was a Neopythagoreanism|Neopythagorean
, who wrote about the mystical properties of numbers.